Oil burner



|.` M. SHARP.

DI BURNER.

ArPucmon man A1 11.1.1919.

1,433,158 Y. Patnted Oct. 24, 1922.

INVENTOR Isaac M. S/zazrp ygygnd Patented Oct.i24, 1922.V

UNITED STATES PATENT oFFlcE.

l ISLC @L SHARP, 0F SAN FRANCISCO, CAIIFORNIA.

OIL BURNER.

- Application ma prix i, 191s. serial no. 256,628.

This invention relates to olil burners and particularly to burners of the rotary type.

One of the ob'ects of the present invention is to provi e an oil hurner of the rotar type in which the oil is lirst utomized an projected by centrifugal action and then further atomzed and projected forwardlyinto the furnace by means of an an- 'nu'lar air or steam blast, as will hereinafter b e fully described.

Another object of the invention is toprovide wbutner structure which permits withdrawal of the fuel atoinizer and the parts conneoted therewith when the burner is not in operation.

Another object of the inventionv is to provide means for automatically 'shutting olfthe oil`supply when the atomizer is withdrawn.

Another object of the invention is` to provide anovel forni of centrifugal fuel atomizer and in conjunction therewith means for regulating the volume oi'A air or steam employed for Secondary atomizatlon.

`Fnrther objects will hereinafter appear.

The invention consists of the iai-ts und tho construction, combination am arrange ment of parts as hereinafter moitfullv described and claimed1 haring reference to the accompanying drawings` in which- Fig. 1 is a central vertical, longitudinal sectionVthi'ough the. burner.

Fig. 2 is n crosa section oi'= thc same.

Fig. 3 is a detail view of the centrifugal ntomizer.

liefern-innr to' the dra-wings in detail. iudientes` a burner casing-which in this instance is adapted to he secured to :i furnace. front by moans cf' an annular. flange 0 'llucasing is cylindrical in cross-caution.

an shown in ["ir. .2 and is provided with n ccutral passage 'nnd a plurality of' .smaller passages 4 arranged in cylindrical f ormation around the central [maximil. Slidably mounted on the. outer end ol' the casing' is u head member 5 which Vis slipplntcd ln' means of a eleeve extension (i. The head membery is provided with opcniufsl 4 which normally register with the. passi-ages 4 and it is also provided with a damper plate 6 in which are formed openins T, these openings boing moved into or out of register with the openings 4 by turning the plate 6 upon a hub-like extension 8 formed on the forward end of the head. T lle head is otherwise provided with a handle 9 lto permit a sliding movement to he imparted thereto when it is desired to withdraw the fuel atomizer, as ivill hereinafter he described, and it is also provided with means for limiting its movement and for preventing turningA movement of the h ead when the atomize'r 1s withdrawn. This is accomplished by form# ing a slot 110 in the cylindrical extenion Gf through which a stop screw l1 passes. screw may, however, be entirely removed if it is desired to remove the head member and the parts attached thereto but it otherwise serves the function of limiting,r the rearward movement of the head.

The main operating parts of the burner are supported by the head member and are practieallynll positioned within thi: central chamber 3 of the casing. These members comprise a" hollow shaft 12 which is su 1- ported in a ball bearimcr 13 mounted within a h'uh-likc extension 14 secured to the head member orformed integral therewith. Also secured to the head member is a stationary fuel delivering pipil l5 in which is formed a central passage 1G. This passage is in constant eounmlnication with a port 17 and apipe 1R carried by the. head. 4This Apipe is so arranged as to he received by a passage l!) formed in' the casio;r and it is employed for the, purpose of cooperating with u vulve 20 which uutomuticalliv shuts oli' tho oil supply to the atomizer when this is withdrawn. 'lhc valve 2l) iiil normally hold against thc scat 2l hy menne` of u spring: 22 and it serves the fum-tion of opening or olosing a fuel passage '2li formed in the casing1 which is supplied with oil from any suitable. 4oui-cc by means of u pipe 24. The. forward end of the pipe 1S engages the valve l'wl'wn the. atomizcr is moved into opel-ab ing position. thereby movin; r the valve away from its sont and permitting oil to flow thereby into nn annular olmndier The oil here enters ports QG lormed in the forward cmi of the pipe and tln-u pasa-es through the pipe 5S. pori-s li andthe stationary fuel delivering pipe l5, directly into the alomizcr generally indicated at ll. This aiomizer i.-: secured on the forward und of ini ' the hollow shaft and consists of n head member in which is forniecl'an interior chainb'er 25. The head uieniher is otherwise provided with lureil exterior bui-fairenl such :is shown ut 'Ztl and $10, the (hired-surfaice bcingpr -sliaped annular flange 32 securedV o'n the outer end of the pipe l5 and the oil thus delivered is dischq'r ed ,radially by centrifopenin V ugal force throng eries of slot-like 335 these slo `like openings being l formeA .by rutting spiralhaped grooves 34 inthe .outer surface of the atomizer.

For the pur of,rotating-tlie ator'nizer at l. comparatively highispeedg I provide u Spiral-like vene such als shown at 35. 'This' une" may he secured. to the hollow shet or formed integral therewith nnd it is actuated by a', fluid under presure suc-h as uiinor steam,

whiclrls admitted through a pipe 3G. Thisv pipe is secured on the ens-ing' A und may he connected with u fln orpressure blower not h ere shown or it-'may he connected with ,u source of s'team supply. Theiiir or steupi udmittedrenters 'the central cliumben 'and then lisses through u .series of openings' into tllie nozzle 2&1. This nozzle'is supported `b the haringg'member 14 hy screwing it tliereon, as slimyn at 38. rounds the spiral-like vutie 35 und its forward enil'is enlarged, as shown at 31* to partly enclose Vthe atominer and also to form a support und mide for `the forward end of the noxle. f he enlarged poi-tion 3l is SIightIy'IesS-iIiJIiameter .than tli'e interior chiunher ll, to permitu certain proportion of uir'th dsrhur 'e flierethiough'nml it is otherlwisie proviilec (Vith u fluring month Il!) whirh in iulupted to rimpriite with the flaring surfue-o 29 formed ou tlu-l utoinzrrio regulate. the rcluino of :iii passing tlmuggli the spiral vane 35i. .4

'ln urituul iqirutiong'withtho Iii-uil muniher ueuininm'tluposition shown in l"g'r.,|. it manille Seen lliut vulve :0 will luform-.1l anvar frilunits Seul lo permit oil lo i-siptunil utw ports 26. 'lliv oil entering: lluvw lib pm'l i-oiiiluistioii; unil tlm-il, lo pi-mlur-o :i

hy the.

screwing itv with relation to 'inciisin 1 considera le importance us, it materially alf- It entirely sirsecondary atomiziiig the utomizing Illce.

erate the utoinizer is obtained when the um passes throii Ii the ports 3T antl'tlie spiral varie 35. Tiis air discharges'fhetween the atomizer and the nozzle seat 39 und thus passes through the spray of oil pmiected by tlie ntomzer. The secondly atomiziug iiction' is thus obtained as'the nii' dischargers' with snflcenz velocity to further breakjup the oil and carry it forward into the furnace. It amo causes a thorough mixing action whiclrprocluoes a homogeneous mix-V,

ture aclapbedgfztosinstantl i `te.

The speed' imtatoii gli; be

its liosition withrelation to the If tie nozzle is moved `forwardly byunthe bearing member 14 it canreadily be seen that the annular passage formed between the uton'iizer and the nozzle is reduced; This reduces the voluine of uir pussng through the spiral vane und tlierefoio` decreiiisnl the' speed. Conversely, rearward movement of the nozzle will enlrge s'aidopenng uml therefore .pei-init u freer discharge df un' and u greater volume to ass through' the rune, 'thereby t ie speed. This adjustment is of.

fects hoch the primary und the'l lerende-t5:

The revolving morenient requiredY to o iaction mul to pro'eet fuel fornunlly into the ur- @einen positlo'xrdithe 1nuziale Blby n )listing atomzer.

atomizutioii obtained und it also permits second volume of uit to be disrliurged exterioi of the nozzle 3l; tlint is, through the annular passage foi-med between the' fon wurd und of the nozzle pro ier.

\l7heii the burner is in operation and it is desired tei-extinguish the lire. it is merely necesury to gimp the hiuullo Sl und pull the :ind the casing luuul iueinher iii n i'i-,urwuiil diret-tion. The

mui'wiird movement. us previously tuted, is limiti-.il hy the length ol' the slut formed 'in the. qvlinili'irul extension nini the slot is of such zi. length that the utoinimr B ivill reuch in point approximately iu alignment with the nir delivering pip:I 36, 'lwo results are obtained: lim., lhut of protecting; thu atomliruil .is pulh-l ivuru'iirdly im the pipe -lH serum-l "ilu-rolo will more :in/ uy from the.

' thereof or. through 4 the volums through eac i minted, to u. xs;

from ,the nozzle s irul vane and passing over the sir suppl exterior its interior. Jongitudimi -adjuntxnent of the head' proper permits shutting uit orturning on o the oil and it also permits removal of the utomizer to n oint where .it will not he infected-b the intense heat of the furnace and any oi sibly 'remaining therein. cmbonizerhlio spiral. grooves 34 formed on the exterior suraoe of the head are Valso of importance as they. materially assist in, rotating the same; that is. the nir-escaping .from the the head will aso pass-through the grooves 34 nur strikes the inclined or angulnrly disposed spiral walls of the grooves 34, it must be ap ureciated. that rotary movement is materm ly assisted., The Imation of the air nozzie is also an irportant feature; that is, being positioned mthinthe easing gro r and surrounding the hollow' shaft 'c .forms two air chambers, throu h which sir passes,

age being reglzreat extent,

nozzleregulates v the'positlon of the nozzle with relation to t e atomizer. 1 As the air' passes through both usages, a. cooling oect is obtained which is important, as it prevents overheating und carbonization of the oil. It furthermore retains the bearing 14 cool. thereby preventing excess .consumption ol inbricatmg oil or. overheating of the serum When the burner is secured to the furnace front by means of a (lange 2 and bolts passing then-through, it van be sri-n that the iut 4action caused Aby the'disrharg ing oil und thc annular air blunt osuupmg Ill.,will induce a llow. nt

nir through the passages 4. A considerable volume of nir is induced bv theA jet arton through these pussagca and if tm'great. may

he regulated hy menus of the damper [date G, This plate should alu-:lys be turned to Yclosed position when thc lire is shut down,

us it is not desirabk` tn quit-lily cool the f ur nuce by permitting u freu inllou of nir through s'ud passages. 'lbe air through pipe titi is also shut olf when the. lire in not rrqnired. as :my volume. of air cm'nping when oil is not delivered. would merely prmluce :l cooling.r effect \vthin.tlufuruure box.

.\ll heat imparted' to the furnace and vontaincd in thc bricku'ork or lining may thus. be letuinod for a long time as it is possible in the 11i-went instance to form n. practirullr speaking.hermetic seal when the burner is not operating. A

Another important feat-ure of the present invention is u construction which permits rom letc removal of the head men'iber. furl 1er important feature is the .fact that practically all operating parts arc supported by said .head member. and are thus easily accessible for inspection and rc air when the bund member isremovcd. lWhile the bearing member L4 is here shawl. as a sepurute part. secured to the head member, it is obvious that it ma with if desired. similarly stood that the materials and linish of the-sm'- eral parts employed may be such es -the ex perenee and may diotate or varying conditions may demend.

wish it ,unden- Haring thus deecribed my invention1 what,

I claim und desire to'secure by Letters I atent is- 1. An oil burner comprising a casing, e rentrifugal atomizer jonrnaled in the casing.l an air nozzle surrounding the ntomizer and forming an nnm\lardiseharge passa re there about, means for delivering air un( er pressure to said muzzle` an annular sc'ut formed be made integral theref' )pdgment ofthe manufacturer` on the oxtcrinr surfnre of the atomizer. a

cooperating sont formed in the discharge end of the air nozzle. said nozzle bein longitudinally movable with relation to t ne an .nulur scat on the atomizer to regulate the volume of nir discharging` between the nozzle and the atomizer'.

2.,An oil 'ln'urncr wmprising a casing, e centriigal utomizer jonrnaled in 'the eas-` ing. an air nozzle surrounding the etomizer and forming un annular discharge passage tlwrcabout. means Tor. delivering air under pressure lo said nozzle. an annular seat formed ou the exterior surface of the atomizrr, n eooperating-seat formed in the diselmrge und of the air nozzle, ing longitudinally movable. with relntlonlo thi-annular sont on the atomizer to regulate the volume 'o nir dischnrgin nozzli` and tlu atomizer, :1 ho lou' shaft extending]through the nozzle. supporting the atonliw-r. and means on said Shaft and within the nozzlc` for' imparting n rotary movement to tbc. shaft 'unil the utomizer carried llwrulry.

3. Anni! burner comprising a casing, e rrntrifugal utomizer journnlcd in the casingr` an air nozzle. surrounding the atomizer und formim.r an annular discharge passage thcrcabout. means for dvliveliiur` air under pressure to said nozzle. an annular seat formi-d on the exterior surface of thc ntomizcr, n rooperating sent formed in the disvhngc rnd of tbc. air nozzle. said nozzle being longitudinally movable with relation to Y the annululxsent on the atomizer to rngulate the ,rolumc'of nir discharging between the nozzle und the atondzcr. n hollow shaft extending through the nir/.zie` siiplriltlig the atmuizvr, und means on said shaft and within the nozzle for imparting r rotary moremcnt lo the shaft und the ulomizer carried thereby. said means comprisin r n spirulslnrpcl vam- .s-ovnrcd ou the hol ou shaft.

l. ln an oil bul-ucr of the character described, a centrifugal atomizer. said centrifugul ntumizer cmnprismg a heud member. n. central chamber formewithin :snid hond between the closed head member having a Vcentral cham- 4 ber formed therein, anda.'A plurality of an'- .fiar of ma'emr'mr of the 20 -1 thel nozzle,

i a.` centrifugal. atomizer' gularly disposed slots formed [rior surface ofthe the extehead member, said slots being so deep as to cut partly through the" head member and to conmiunieate with the interior chamber. A V

13 An oil burner comprisin a casing, a centrifugal atmizer .journalle inwthe casingan air nozzle surlroundin the 'atomzer arge passage thereabout,aI central paagein the casing for delivering air unc er pressure to saide'entral passage and-to the 'nozzle to permit air to dischargeboth intep nozzle,said nozzle -beinglngitudinally `movable with rela# tion-to the atomizer-tb` re ulate the volume o'f air discharging .throng andI exterior of an *a wardly ot the atomizer and interior of 'the nozzle, said spiralA shaped vane. adapted to rotate the atomizer when ain is passing tho'ugh the nozzle.

y14e. A vburner of,v the character described, v comprising an inclosedjhead .-rn'ember, a 4central .chamber formed t.herein, a lu'ra-lity of .slots formed in the exterior sur to cut partly the 'interior chamber,

15; An oil burner comprising ,n cylindrical shaped casing having a central passage formed thereinya head member forming a closure for'one end of the casing and slid- -membel and the head spiral shaped yane rear-1 aceofthehead meml-Jier, said lslots being so'fdeep asl through the head member and to commu'incate with able longitudinally on the casinga bearing member and the head extending into the centml paage, a shaft journalled'in theV bearing! member, an atomizer secured on the outer end of the' shaft, a nozzle carried by the bearing-member and forming an annular air passage about the atomizer, said nozzle 'being longitudinally movable with relation Vto the atomizer und the bearing memberg and means forpassing an air blast through and .exterior of the nozzle.

outer end ofV the shaft, a nozzle carried by ber and fommng an an'nu.

the hearing' me lar air passagejpabout the utomzer,saidnoz zle being longitudinally movable with rela tion `to the atomiz'cr and the bearin member, means forpassing an air blast t rough aridv exterior -of the nozzle, and a spinal shaped vane on the shaft interior of the noz- -zleadapted torotate the shalt and atoxnizer when air is passing through the nozzle.

In testimony whereof I have hereunto set my hand in the presence of -two 'subscribing witnesses.

Isaac MQ snaar` ll'itnesSeS:

YiUlV. Hmnnr, M. F.. Envnm.

cylindri- 

